# Solved: Scores on an IQ test are normally distributed. A

## Problem 3E Chapter 6.11

Statistics for Engineers and Scientists | 4th Edition

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Problem 3E

Scores on an IQ test are normally distributed. A sample of 25 IQ scores had variance s2 = 64. The developer of the test claims that the population variance is σ2 = 225. Do these data provide sufficient evidence to contradict this claim?

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STAT 2004 WEEK 9 BERNOULLI DISTRIBUTION  In a Bernoulli distribution, an outcome has two possibilities: success or failure. o Success- What we were interested in happened. o Success is represented by a 1, while failure is represented by a 0.  Probability of success is represented by a p.  For a Bernoulli random...

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